The Settlement Prediction And Influence Depth For Vacuum Combined With Surcharge Preloading In Soft Foundation

Vacuum combined with surcharge preloading method in the vacuum preloadingmethod heap contained precompression good combination of both to solve the load ofthe vacuum preloading method the problem of insufficient to solve the heap are setout law means a single, time-consuming drawbacks.affordable, easy to operate. Thismethod is widely used in construction, ports, airports, roads and other soft soil.However, this method of vacuum preloading the depth and the prediction of the finalsettlement is still to be resolved.This paper funds by the national natural science，relying on a project in HengqinIsland soft foundation treatment projects on the basis of summing up the results ofprevious studies, laboratory experiments and monitoring of data analysis, analysis ofthe vacuum preloading combined heap load of soft foundation reinforcement effect,and the final settlement made certain improvements in calculation methods. The mainwork of this paper is as follows:1.Detailed collection of engineering geological conditions of the study area, andto evaluate.2.According to the engineering geological conditions, Vacuum Stack preloadingmethod handle soft ground, and Vacuum Stack preloading works deal with the sceneusing a variety of methods for monitoring: Vacuum Combined Loading of surfacesubsidence changes in pore water pressure changes, stratified subsidence andgroundwater level changes, and the monitoring data production related maps foranalysis.3.Vacuum preloading depth analysis focuses on the depth of groundwater leveland drainage body depth of the vacuum preloading. And to determine the vacuumpreloading impact of the project depth.4.Vacuum Combined with heap load after the end of the preloading in the fieldvane shear test, standard penetration test samples for laboratory test, and mainly deal with soil reinforcement before and after the physical indicators and shear strengthparameters for analysis and foundation after foundation bearing capacity value.5.The vacuum pre-engineering pressure effectively influence the depth ofsettlement after the effective influence within and outside the depth of soil to make afinal settlement prediction for the line, the results show that the work of the project toinfluence the depth to meet the general building requirements.